Bump rexml from 3.2.5 to 3.3.6 #2300

Job	Run time
coverage	4m 35s
unit-tests (ubuntu-latest, dash, 4)	2m 5s
lint	29s
unit-tests (windows-latest, bash, 1)	10m 12s
integration-tests (ubuntu-latest, dash, 4)	1m 34s
unit-tests (windows-latest, cygwin, 1)	6m 45s
unit-tests (windows-latest, wsl, 4)	7m 34s
unit-tests (macos-latest, bash 3.2, 4)	2m 37s
unit-tests (macos-latest, bash 3.2 with coreutils, 4)	2m 44s
unit-tests (ubuntu-latest, registry.access.redhat.com/ubi8/ubi-minimal, bash 4.4, 4)	2m 23s
unit-tests (ubuntu-latest, alpine, zsh, 4)	2m 17s
unit-tests (ubuntu-latest, alpine, ash, 4)	2m 5s
unit-tests (ubuntu-latest, ubuntu:22.04, posh, 4)	2m 21s
report	5s
	47m 46s

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